Automatic pipe-cutting machine



Dec. 25, 1951 A. BRIGLIA 2,580,279

AUTOMATIC PIPE CUTTING MACHINE Filed April 17, 1948 4 Sheets-Sheet 1 w INVENTOR.

6% Y M l a 1951 A. BRIGLIA 2,580,279

AUTOMATIC PIPE CUTTING MACHINE Filed April 17, 1948 4 Sheets-Sheet 2 1 2 9 J v I0 INVENTOR. Azvro/v 52/44 Pam A M 1951 A. BIYQIGLIA 2,580,279

AUTOMATIC PIPE CUTTING MACHINE Filed April 17, 1948 4 Sheets-Sheet 5 INVENTOR. ,4/vr0/v 5/2764 /,4

Paw ATM ATTOE/VE/ d'raulic: system and electric controls for. ing' the pipe into" thev cutter.

Patented Dec. 25, 1951 l 1,2.580L2i9 v a AUTGMATIC PI E-curring H Anton=.Briglia.. Brooklyn, N; QIB i a' QiF hus ss n United Pipe Nippfe Comp Application April-17, 1948;,- Serial N 2 v I 19::Glaims. (CL fi l- 61 My invention relates to a machine which semi automatically operates the: cut off. I actuator mechanism to cut ofi or sev'er a. lengtlrof pipe or th'e'lilseinto nipples,- or shortl'engthsof pipe which may be manually fed intothe-machine. 1

Amongthe purposes and objects of my invention are to provide, a cut oil actuator which may be set to semiautomatical-ly' repeatthe cut operation. r it Another object is to electrically control a hydraulically operated cut ofli actuator for a pipe cutting machine.

object isto provide an electric control and. liquid pressure pump and valves for: operating the cut off actuator by a fluid-motor- Still another object is to" provide an. electrically controlled hydraulic systemv inwh'ichflthe direction: of flow of liquid is reversed: by the mechanical operation of thecut off actuator;

An object is: to provide a hydraulic; system, electrically controlled, in which the time of re.- peating the cycle of cutting off nipples in :se-

-quen'ce from a pipe maybe adjusted to suit the speed oi the" person feeding the pipe to' be cut.

I accomplish these and other: objects by the construction herein. described and shown in the drawings which form a part of my disclosure.

In the drawings: a I Fig.1 is an elevational'view showing'the hyactuat- Fig 2 is an elevational' view showing the" cuttext and machine in fullv lines and the pipe and a supportin broken lines; Fig. 3. is a diagrammaticview of the hydrau lic system.

Figs. l, 5, 6 and 7' are electric diagrams showing the positions of the switches and valve parts during a single cycle of the cut-off operation. Similar reference characters refer to similar parts throughout the several views of the drawing and in the specification.

. My. invention is particularly suitable for actuating :thepipe into high speed. cutters which rotate the pipe while: being severed. The pipe is pressed against the rotating -cutter;.tbeingv ac:-

tuatedupw ardly by ahead having rollers to penmit the pipe to rotate. The: cutter, motor which rotates it, and the head for moving the pipe into the cutter are well known. The valves and switcheswhich control them and the solenoids which are used alsomay be purchasedand need notbe modified to suit my system in which they are used. .1

The fluid-motor and many .of the:- other parts claims.-

by referring: to; Fig. 3 oi the drawings.

pump 4 receives liquid from the: reservoir [0 valve. I5.

e. fi m: n m o Brq fre neede'not be described in. detail further than to illustrate the use to which they are put incarrying out theiri-nstantiunctionswhich in some respects are similar; to the automatic pipe cutter set forth in my. co pending application for patent filed April 5, 1-948 having Serial. #155,985 which difiers from the instant disclosure by have its; the cut, on mechanism modified. to; co-act with thefeed. for advancin the pip at pr termined distanceto suit the length of the nip ples being cut off all automatically.

1 have not attempted to show all possible modifications which may bemade but rather to: describe the construction of a preferred: embodiimentof. my invention precise detail so that it may be more easily understoodby one skilled inwthe -art; towhich this invention pertains.

Modifications may su est thems lv s aft r a study of this, my disclosure.

The preciseness of the detailed description amithe prccisenesscf the d ail inthe drawin are not intended to; limi th sc pe of my inventions-which is set forth in the appended ,Rererring to thedraw nes, I, have shown a cutter l 'rotatably mounted inthe stand 2 and driven by the electric motor 3 which also drives a pump 4 by a belt or the like 5 which transmits -motioncto the pum-pfrom the pulley 6 secured to the armature shaft 1 of the: motor to the pulley 8-secured toand driving the shaft 9 of hopump The hydraulic system may be readily followed The der pressure through the pipe I2 to the pipe through the pipe. It and discharges liquid unis throu hthe reliefv valve Ht to the four way A bypassvalve lfiis provided. with a hand wheel'. lv'5' to regulate or relieve the pressure in the pipe I 2 and to render theoperationof the hydraulic system inoperative: asit afiects the .to'actagainst'the face 250i the piston; the four -6 and 7.

secured and the connecting rod 21 which swings the lever 28 which rotates the cam shaft 29 and the cam 3|) which presses upon and moves the cam follower 3| vertically upward which raisesthe adjusting screw 32, roller head 33 and rollers 34 which support and press the pipe 20 against the cutter until severed, whereupon the motion is reversed by the retraction of the piston rod as above described. 7

The crosshead 26 is provided with the cams 35 and 36 each provided with its respective adjusting screw 31 or 38 to move the cam in the direction of travel of the crosshead to change the relative time for operating the switch operators 3i! or 40 which close the normally open switch 4| or open the normally closed switch 42; the adjusting screws thus change the length of stroke of the parts moved by the fluid-motor or its relative travel at each end of its stroke; in most cases cam 36 does not require adjustment.

The operation of the switches 4| and 42 to move the four way valve |5, may be followed by referring to the wiring diagrams, Figs. 4, 5, In Fig. 4 the crosshead is shown as moving toward the switch 4|, which is normally open, whereupon contact by the cam 35, which engages the operator 39, closes the switch 4| to move and to reverse the four way valve, the crosshead and piston l8.

The switch 4|, when closed, as shownin Fig. 5, energizes the solenoid 43 which closes the switches 44, 45 and 46 which are moved by the manifold operator 4! which is connected to the solenoid. When the switches 45 and 46 are closed, the solenoid 48 is energized which overcomes the spring 49 to move the valve to connect the pipe l3 to the pipe 24 to force the piston l8, crosshead 26, and the pipe 20 to be retracted away from the cutter Liquid is exhausted from the fluid-motor through the pipes 22 and 2| from the fluid-motor cylinder I? to the reservoir l0.

In Fig. 6 the crosshead is shown moving toward the normally closed switch 42, which, when the cam 36 touches the operator 40, is opened thereby deenergizing the solenoid 43 which in turn opens the switch 46 to deenergize the solenoid 48 and thus permit the spring to move the valve |5 to connect the pipe l3 to 22 and the pipe 24 to 2|, as shown in Fig. 7,'to force the piston 18, crosshead 26 and rollers 34 to again press the pipe 20 against the cutter to again sever a new length of pipe and to repeat the cycle of operations as above described.

The electrical connections to the switches 4| and 42 and to the solenoid 48 for operating the four 'wayvalve are carried in the cables 5|! from the boxes 5|, one of which houses the solenoid 43, switches 44, 45.and 46. The boxes are pref- ,erably mounted on a. panel 52 which ispreferably secured to and supported by the motor and stand 2.

.switches 4| and 42, the crosshead 26 and cams The stop may be adjusted to suit the diameter of pipe being cut as well as the length of the nipple and is swingingly supported by the arm 56 which is clamped onto the stand 51 which is secured to the stand 2.

The-term fluid-motor, as used herein, is intended to broadly include the cylinder, piston and such other parts which are used to impart motion to the parts above described in cutting the pipe into nipples in sequence; the fluid-motor thus moving its parts first in one direction, then in the opposite direction. The fluid-motor thus 'is .broadly adapted to move the cams which operate the switches, solenoids, valve and other parts which are moved by pressure applied to the fluid-motor. The adjustment of the position ofthe cams in relation to the crosshead moved by the fluid-motor is directly capable of length- .ening or shortening the stroke at each end or both ends of travel of the fluid-motor; the piston of which is responsible for its motion, the piston rod for its imparting motion and cylinder for its being able to convert pressure .to the moving parts, all of these are broadly termed fluid-motor.

The material used and the size of the parts as well as the particular type and construction of the devices which may be purchased on the open market may vary without departing from the principles which underly my invention.

Having thus described a preferred embodiment of my invention what I claim as new and desire to secure by Letters Patent is set forth in the claims which follow.

I claim:

1. 'In a nipple cutting machine for automatically severing a pipe in sequence until cut into nipples, a pressure operated. liquid-motor, a cutter and electric switch operating means moved by said liquid-motorv to close and open said switches at each end of travel, said liquid-motor pressing said pipe into said cutter and withdrawing said. pipe after being severed, a valve for admitting pressure and for exhausting pressure to move said liquid-motor, and electric operating meanscontrolled by said switches to move said valve to reverse the motion of said liquid-motor, said electric operating means comprising a manifold switch and solenoid operating means for moving said manifold switch.

2. In a nipple cutting machine for automatically severing a pipe in sequence until cut into nipples, a pressure operated liquid-motor, a cutter and electric switch operating means moved by said liquid-motor to close and open said switches at each end of travel of said liquidmotor, said liquid-motor pressing said pipe into said cutter and withdrawing said pipe after being severed, a valve for admitting pressure and for exhausting pressure to move said liquid-motor,

and electric operating means controlled by said switches to move said valve to reverse the motion of said liquid-motor, to again automatically repeat the cycle, said electric operating means comprising a manifold switch and solenoid operating means for moving said manifold switch and a solenoid for operating said valve. (6

3. In a nipple cutting machine for automatically severing a pipe in sequence until cut into nipples, a, pressure operated liquid-motor, a cutter and electric switch operatin means moved by said liquid-motor to close and open said switches at each end of travel of said liquidmotor, said liquid-motor pressing said pipe into said cutter and withdrawing said pipe after being severed, a valve for admitting pressure and for exhausting pressure to move said liquidmotor, and electric operating means controlled by said switches to move said valve to reverse the motion of said liquid-motor, to again automatically repeat the cycle, said electric operating means comprising a manifold switch and solenoid operating means for moving said manifold switch and a solenoid for operating said valve, said solenoid being controlled by the operation of said manifold switch.

4. In an automatic pipe cutting machine having a rotary cutter and liquid pressure means for pressing the pipe being out against the cutter to sever the pipe into nipples and electric switches and operators therefore to control said liquid pressure means to stop and reverse said liquid pressure means when said pipe has been severed, and to stop and reverse said liquid pressure means to again automatically'repeat the cycle and to again press said pipe against said cutter to again sever said pipe whereby nipples may be intermittently severed in sequence in self repeating cycles until said pipe has been cut automatically into nipples.

5. In an automatic pipe cutting machine having a rotary cutter and liquid pressure means for pressing the pipe being out against the cutter and electric switches and operators therefore to control said liquid pressure means to stop and reverse said liquid pressure means when said pipe has been severed and valve means and electric means to move said valve to stop and reverse said liquid pressure means at both extremes of travel and to again automatically repeat the cycle to continue the operating cycle until the length of pipe fed into the machine has been cut into nipples.

6. In a nipple cutting machine for automatically severing a pipe in sequence until cut into nipples, a pressure operated liquid-motor, a cutter and electric switch operatin means moved by said liquid motor to close and open said switches at each end of travel of said liquidmotor, said liquid-motor pressing said pipe into said cutter and withdrawing said pipe after being severed, a valve for admitting pressure and for exhausting pressure to move said liquid-motor,

and electric operating means controlled by said switches to move said valve to reverse the motion of said liquid motor and to again automatically repeat the cycle.

7. In a nipple cutting machine for automatically severing a pipe in sequence until cut into nipples, a pressure operated liquid-motor a cutter and electric switch operating means moved by said liquid-motor to close and open said switches at each end of travel of said liquid-motor, said liquid-motor pressing said pipe into said cutter and withdrawing said pipe after being severed, a valve for admitting pressure and for exhausting pressure to move said liquid-motor, and electric operating means controlled by said switches to move said valve to reverse the motion of said liquid-motor and to again automatically repeat the cycle said switches comprising a normally open switch at one end of the stroke and a normally closed switch at the opposite end of the stroke of said liquid-motor.

8'. In a nipple cutting machine for automatically severing the pipe in sequence until cut into nipples, a pressure operated liquid-motor and cutter and electric switch operating means moved by said liquid-motor to close and open said switches at each end of travel of said liquidmotor, electric operating means controlled by said switch and a valve operated by said electric operating means to change its direction of travel, to automatically and successively repeat the operating cycle.

9. In a nipple cutting machine for automatically severing the pipe in sequence until cut into nipples, a pressure operated liquid-motor and cutter and electric switch operating means moved by said liquid-motor to close and open said switches at each end of travel of said liquidmotor, electric operating means controlled by said switch and a valve operated by said electric operating means to change its direction of travel and to connect said valve to said liquidmotor to change its direction of travel and again automatically repeat the cycle to successively sever the pipe into nipples.

ANTON BRIGLIA.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,877,198 Readey Sept. 13, 1932 2,301,028 Esch Nov. 3, 1942 

